Question

如果您访问网址：

https://selfsolve.apple.com/agreementWarrantyDynamic.do?caller=sp&sn=990002316140324

然后它将重定向，结果将显示在URL：

https://selfsolve.apple.com/wcResults.do

我尝试使用PHP cURL来获取此结果，但该页面为空。它没有重定向。

这是我尝试的代码：

<?php 

$url ='https://selfsolve.apple.com/agreementWarrantyDynamic.do?caller=sp&sn=990002316140324';

$http_headers = array(
                    'Accept: /*',
                    'Connection: keep-alive'
                  );

$ch = curl_init();

curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $http_headers);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.0.3705; .NET CLR 1.1.4322)');
curl_setopt($ch, CURLOPT_COOKIEJAR, dirname(__FILE__) . '/applecookie.txt');
curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, true);

$retValue = curl_exec($ch);
$response = json_decode(curl_exec($ch));
$ee       = curl_getinfo($ch);
print_r($ee);

print_r($retValue);
?>

如何让它发挥作用？

Answer 1

====（可能）问题：您的PHP配置已启用safe_mode或open_basedir。

CURLOPT_FOLLOWLOCATION（整数）当此时，此常量不可用 open_basedir或safe_mode已启用。（http://php.net/manual/en/curl.constants.php）

====（可能）问题：远程服务未按预期响应。将其分解为单个部分并记录输出，或检查谷歌浏览器（或类似）的重定向：

Chrome's view of this...

A-ha！ Chrome显示没有重定向！

在PHP中，这可能类似于下面的内容。此代码将手动循环遍历重定向链，并为您提供检查响应的机会。：

(see code below)

====问题：您正在执行请求两次（您可能已经注意到了这一点！）：

$retValue = curl_exec($ch);
$response = json_decode(curl_exec($ch));

====问题：您希望json_decode获得HTML响应。这不起作用（并且不能指望）。

简称看起来这个页面正在使用JavaScript中的重定向，而不是正常的标题重定向。您可能不得不重新考虑您的方法，因为您可能很难从页面中提取此信息，而且它肯定会发生变化。（它实际上是将表单提交到下一个网址，因此您必须确定数据的来源 - 再次检查Chrome日志。）

（脚注）代码将帮助您在PHP中发现这一点（对于此URL，它会立即返回200 - 没有重定向！）：

    <?php
$url = 'https://selfsolve.apple.com/agreementWarrantyDynamic.do?caller=sp&sn=990002316140324';
$http_headers = array(
        'Accept: */*',
        'Connection: keep-alive',
        'Accept-Encoding:gzip, deflate, sdch',
        'Accept-Language:en-US,en;q=0.8,es;q=0.6'
);

$finished = false;
$count = 0;//we don't want to redirect forever!
$currentUrl = $url;
while( $finished == false && $count < 10 ) {
        $count++;
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_HEADER, true);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $http_headers);
        curl_setopt($ch, CURLOPT_URL, $currentUrl);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.0.3705; .NET CLR 1.1.4322)');
        // not while we're testing: //curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, true);
        $retValue = curl_exec($ch);
        $info = curl_getinfo($ch);
        $responseCode = $info['http_code'];
        if($responseCode > 300 && $responseCode < 303) {
                echo "\n redirecting ($responseCode) to ".$info['redirect_url'];
                $currentUrl = $info['redirect_url'];
        } else {
                $finished = true;
                echo "\n finished ($responseCode) content length:".strlen($retValue);
        }
}


//now try the whole thing

$ch = curl_init();
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $http_headers);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.0.3705; .NET CLR 1.1.4322)');
curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, true);
$retValue = curl_exec($ch);
$info = curl_getinfo($ch);
echo "\nWhole request: finished ($responseCode) content length:".strlen($retValue). " total redirects:".$info['redirect_count'];

echo "\n\n";

输出：

finished (200) content length:4833
Whole request: finished (200) content length:4833 total redirects:0

PHP cURL遵循重定向并获得结果

1 个答案: